Autocomplete?? Autosuggestion??

from tkinter import *
import sqlite3

# def create_db():
#     conn = sqlite3.connect('palabras.db')
#     cur = conn.cursor()
#     cur.execute('create table if not exists words(words text)')
#     cur.execute('insert into words values (?)', ('silencio',))
#     cur.execute('insert into words values (?)', ('hogar',))
#     cur.execute('insert into words values (?)', ('zapallo',))
#     cur.execute('insert into words values (?)', ('ñeri',))
#     conn.commit()
#     cur.close()
#     conn.close()

# create_db()


def fetch_data(word):
    conn = sqlite3.connect('palabras.db')
    cur = conn.cursor()
    cur.execute("select words from words where words like ? || '%'", (word,))
    allw = cur.fetchall()
    return allw


def on_key_release(event):
    qword = event.widget.get()
    allw = fetch_data(qword)
    listb.delete(0, END)
    for w in allw:
        listb.insert(END, w)

def on_selection(event):
    ent.delete(0, END)
    ent.insert(0, event.widget.selection_get())

root = Tk()
ent = Entry(root)
ent.bind('<KeyRelease>', on_key_release)
listb = Listbox(root)
listb.bind("<<ListboxSelect>>", on_selection)
ent.grid(row=0, column=0)
listb.grid(row=1, column=0)
#first time listbox load
allw = fetch_data('')
for w in allw:
    listb.insert(END, w)
root.mainloop()